A 10-year-old child with strep throat asks the nurse, "why there are large bumps [lymph nodes] on my neck when my throat gets sore?" The nurse replies lymph nodes
A)
help your body fight off infections by allowing special cells (lymphocytes and macrophages) move through the lymph chain and engulf and destroy germs.
B)
bring in cells into the lymph node (your bump) to stop the germs from going anywhere else in the body.
C)
bring all kind of good cells to your throat so that they can wall the strep off and keep the germs from getting any food or water."
D)
help your tonsils get bigger with cells that will bring immune cells into your throat to prevent any other infections.
Ans:
A
Feedback:
Lymphocytes and macrophages move slowly through the lymph nodes so that they can have adequate time to engulf microorganisms and interact with circulating antigens. The lymph nodes do not bring cells into the node to stop germs; do not bring cells to the throat to wall off strep; and do not enlarge the tonsil with immune cells.
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